Heat index monitor



FIG. 1 is a front perspective view of the heat index monitor;

FIG. 2 is a bottom elevation view of the heat index monitor of FIG. 1;

FIG. 3 is a top elevation view of the heat index monitor of FIG. 1;

FIG. 4 is a left side elevation view of the heat index monitor of FIG. 1;

FIG. 5 is a right side elevation view of the heat index monitor of FIG. 1;

FIG. 6 is a front plan view of the heat index monitor of FIG. 1; and,

FIG. 7 is a rear plan view of the heat index monitor of FIG. 1, wherein the broken lines show environmental context for illustrative purposes only and form no part of the claimed design or a specified embodiment thereof. 

The ornamental design for a heat index monitor, as shown and described. 